https://github.com/vimallinuxworld13/devops_workshop_eks_jenkins_loki_operator #==================================================================================

1. AWS cloud https://aws.amazon.com/

2. New User / Account : IAM user -> power : policy : admin access

3. password (key) access / secrey key

4. download : https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html

5. login in CLI # aws configure

6. eksctl tool : install kubernetes

https://github.com/eksctl-io/eksctl/releases/tag/v0.161.0

7. cd C:\Program Files\Kubernetes

8. install kubernetes over AWS cloud

9. install kubectl to connect to kubernetes https://kubernetes.io/docs/tasks/tools/install-kubectl-windows/

10. connect check : kubectl get nodes

$ eksctl create cluster --name mycluster1 --region=us-east-1 $ eksctl get cluster --name mycluster1 --region=us-east-1 $ kubectl get nodes

kubectl create -f
https://raw.githubusercontent.com/operator-framework/operator-lifecycle-manager/master/deploy/upstream/quickstart/crds.yaml kubectl create -f
https://raw.githubusercontent.com/operator-framework/operator-lifecycle-manager/master/deploy/upstream/quickstart/olm.yaml

kubectl get catalogsources -n olm kubectl get packagemanifests -l catalog=operatorhubio-catalog

https://github.com/helm/helm/releases

$ kubectl create namespace lwns $ ./helm.exe repo add jenkins https://raw.githubusercontent.com/jenkinsci/kubernetes-operator/master/chart $ ./helm.exe install my-jenkins-operator jenkins/jenkins-operator -n lwns --set jenkins.enabled=false

$ kubectl --namespace lwns get pods -w

$ vim jenkins_instance.yaml apiVersion: jenkins.io/v1alpha2 kind: Jenkins metadata: name: example namespace: lwns spec: configurationAsCode: configurations: [] secret: name: "" groovyScripts: configurations: [] secret: name: "" jenkinsAPISettings: authorizationStrategy: createUser master: disableCSRFProtection: false containers: - name: jenkins-master image: jenkins/jenkins:lts imagePullPolicy: Always livenessProbe: failureThreshold: 12 httpGet: path: /login port: http scheme: HTTP initialDelaySeconds: 100 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 5 readinessProbe: failureThreshold: 10 httpGet: path: /login port: http scheme: HTTP initialDelaySeconds: 80 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1 resources: limits: cpu: 1500m memory: 3Gi requests: cpu: "1" memory: 500Mi seedJobs: - id: jenkins-operator targets: "cicd/jobs/*.jenkins" description: "LW Jenkins Operator repository" repositoryBranch: master repositoryUrl: https://github.com/jenkinsci/kubernetes-operator.git

$ kubectl create -f jenkins_instance.yaml $ kubectl --namespace lwns get pods -w

$ kubectl --namespace lwns get secret jenkins-operator-credentials-example -o 'jsonpath={.data.user}' | base64 -d $ kubectl --namespace lwns get secret jenkins-operator-credentials-example -o 'jsonpath={.data.password}' | base64 -d

$ kubectl --namespace lwns port-forward jenkins-example 8080:8080

$ ./helm.exe repo add grafana https://grafana.github.io/helm-charts $ ./helm.exe repo update

$ ./helm.exe upgrade --install loki grafana/loki-stack --set grafana.enabled=true,prometheus.enabled=true,prometheus.alertmanager.persistentVolume.enabled=false,prometheus.server.persistentVolume.enabled=false

$ kubectl patch svc loki-grafana -p '{"spec": {"type": "LoadBalancer"}}' $ kubectl get svc loki-grafana -o jsonpath='{.status.loadBalancer.ingress[0].hostname}'

$ kubectl get secret loki-grafana -o go-template='{{range $k,$v := .data}}{{printf "%s: " $k}}{{if not $v}}{{$v}}{{else}}{{$v | base64decode}}{{end}}{{"\n"}}{{end}}'

Loki log explorer and give this LogQL query in Grafana: {app="loki-medium-logs",namespace="default"} {namespace="lwns"}

Clean up: $ helm delete loki $ kubectl delete deploy loki-medium-logs

https://grafana.com/grafana/dashboards/15141-kubernetes-service-logs/ https://grafana.com/grafana/dashboards/315-kubernetes-cluster-monitoring-via-prometheus/